<template>
	<div class="app-container">
		<!-- 顶部header区域 -->
		<mt-header fixed title="黑马程序员 · Vue项目">
			<span slot="left" @click="goBack" v-show="flag">
				<mt-button type="primary" icon="back">返回</mt-button>
			</span>
		</mt-header>

		<!-- 中间的路由 router-view 区域 -->
		<transition>
			<router-view></router-view>
		</transition>

		<!-- 底部 Tabbar 区域 -->
		<nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-hq" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-hq" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-hq" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
					<span class="mui-badge" id="badge">{{ $store.getters.getAllCount }}</span>
				</span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-hq" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
	</div>
</template>

<script>
    export default {
        data() {
            return {
                flag: false
            }
        },
        created() {
            this.flag = this.$route.path !== '/home';
        },
        methods: {
            goBack() {// 点击后退
                this.$router.go(-1);
            }
        },
        watch: {
            '$route.path': function (newVue) {
                if (newVue === '/home') {
                    this.flag = false;
                } else {
                    this.flag = true;
                }
            }
        }
    }
</script>

<style scoped>
	.mint-header {
		z-index: 99;
	}

	.app-container {
		padding-top: 40px;
		padding-bottom: 50px;
		overflow-x: hidden;
	}

	.v-enter {
		opacity: 0;
		transform: translateX(100%);
	}

	.v-leave-to {
		opacity: 0;
		transform: translateX(-100%);
		position: absolute;
	}

	.v-enter-active, .v-leave-active {
		transition: all .4s ease;
	}

	/*修改类名，解决tabbar点击无法切换的问题*/
	.mui-bar-tab .mui-tab-item-hq.mui-active {
		color: #007aff;
	}

	.mui-bar-tab .mui-tab-item-hq {
		display: table-cell;
		overflow: hidden;
		width: 1%;
		height: 50px;
		text-align: center;
		vertical-align: middle;
		white-space: nowrap;
		text-overflow: ellipsis;
		color: #929292;
	}

	.mui-bar-tab .mui-tab-item-hq .mui-icon {
		top: 3px;
		width: 24px;
		height: 24px;
		padding-top: 0;
		padding-bottom: 0;
	}

	.mui-bar-tab .mui-tab-item-hq .mui-icon ~ .mui-tab-label {
		font-size: 11px;
		display: block;
		overflow: hidden;
		text-overflow: ellipsis;
	}
</style>
